User Manual

ManualsBrandsADC Telecommunications ManualsElectronicsDigivance Long Range Coverage Solution SMR System

Table Of Contents

ADCP-75-116 • Issue A • August 2001 • Section 1: Overview

Page 1-5

©

2001,

ADC

Telecommunications,

Inc.

Figure 1-3. Fiber Optic Transport with Diversity and Without WDM Module

The

optical

wavelengths

used

in

the

system

are

1550

nm

for

the

forward

path

and

1310

nm

for

the

reverse

path.

Because

different

wavelengths

are

used

for

the

forward

and

reverse

paths,

a

pair

of

bi-directional

wavelength

division

multiplexers

(WDM)

may

be

used

in

applications

where

it

is

desirable

to

combine

the

forward

path

and

reverse

path

optical

signals

on

a

single

fiber

link.

One

WDM

may

be

mounted

with

the

HU

and

the

other

WDM

mounted

with

the

RU.

A

diagram

of

a

fiber

optic

transport

system

with

a

WDM

application

is

shown

in

Figure 1-4.

The

WDMs

are

available

as

accessory

items.

Figure 1-4. Wavelength Division Multiplexer Application

BTS

HOST UNIT

REMOTE UNIT

Fig 1-3-A

FORWARD PATH

PRIMARY

REVERSE PATH

COAX

FIBER OPTIC

LINK

DIVERSITY

REVERSE PATH

BTS

HOST UNIT

REMOTE UNIT

Fig 1-4-A

COAX

FIBER OPTIC

LINK

DIVERSITY

REVERSE PATH

WDM

WDM

FORWARD PATH

AND PRIMARY

REVERSE PATH